r-5=8

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Solution for r-5=8 equation: 


Simplifying
r + -5 = 8

Reorder the terms:
-5 + r = 8

Solving
-5 + r = 8

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '5' to each side of the equation.
-5 + 5 + r = 8 + 5

Combine like terms: -5 + 5 = 0
0 + r = 8 + 5
r = 8 + 5

Combine like terms: 8 + 5 = 13
r = 13

Simplifying
r = 13

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